Electric shaving implement



Feb/3, 1942'.v I J. D. ALTEMUs l 2,272,053 Y ELECTRIC S'HAVING IMFLEMENT BY i y ATTORNEY, l

u alvrrron Feb. 3, 1942. .1. n. Aura-:Mus

ELECTRIC SI'IIAVING IMPLBIENT med Jan. '1. 195e' 2 sheets-smet 2 ArroRNEY.

Patented F eb. 3, 19.42

ELECTRICv SHAVVING l LJaimes Altemus, Appliatiin Januy; 7, 1931.32 serial No1--18:5",7-"5'59 v 1'c"1v a ih;y (cned-43), v

' Thisiniretion relates to electrical shaVin'giIiH plenient's of theV type commonly" knownv as j dry shaw/ersV` and hasV for its particular objectsl the prvision of anirnplerne'nt Aof that character rin'V e which the movablefshearing'elernent orgblade member andthe cooperatingfshearing edges',v of

' thestationary'head are vso disposed that kkthe cuttingffegesthereof are exposedso as to intimately crihtract' withthefskin while at the `same time the relation between such' blade elementl and the fier, isola-ted; and

` isolated.

l Referring' to" the" ,drawings and the j constructionjsliown therein; thereference'v numeral l` desassociated@ cutter members: is such that it fis impssible for the skin to.- enter therebetween and" become cut-during shaving'i operation,swhileat thefsame ytime the reception of-'hairs between-the c'uttingelement and the `associate cutting inem bers isffacilitatedz Still othenobjects off'th'e in'- .iyglnates a holder -orha'dle' which `includes an" electric motori housudtnerein (not shown) and ktheizrnaig shaft' ,ofv the implement which isr a' A "'tedim be' driie'rr by suhf 'electric motor in' an nti-clrdckwised ectiori'wheri'vviewed'from the, to@ ofthe implement;A A`knu'rle'd thumb Wheel 3f adingtsfor initially` 'manually spinning the shaft'j l5 ,2 when* thelni'otor circuit isrst4 closed, thereb'y` vention are the provision'oa blade'elementiwhich- I i'srelatively inexpen'siiefand which may als@r if 1l`esire'r, be-'r'enewed'o'r replaced atv will when 'the edgesv thereoflv become d'ull, Other objectsv offthe,A iri'feiitidr'i are the prvision' of an vimplementwliichis attractive' inappea-rance, extremely' cntiri lem'eritend meinbersare capableci'fjlel'lg'r ser efwithout requiring their resharperiing;

Iri'theaecornpanyingdrawings infwhich'l have illustrated preferred fo'rmsoff'my invention- Figure 1 ,is-avperspectiveviewfoimj imi)rei/ellir vation ofthe cutter he'adof the implementv iso-V latedffrom the'holcler'; 2

Fig-sis a, perspective View of the cutter element Ain, the'. form wherein the same is vnot ref newablebyi the user;

Fig; isjaperspectiveView showing theop'- A posing cutter membersjfwhich' 1 co-operate j with such' cutter element; Fig. ',7; is aperspective-view ofa modiedform! y 0fI cutter yelement which is ofthe renewable type; f Eig.. i `isa ,fragmentary,` central, Vvertical ysec-jj tion ofthe shaving head of- .a modiedormhf: Amyinvention;` l i Fig. 9- is f a centralglVerticall section of a razor n In rtilt-f topo'frthejholderi is mnted a kshavir're headythe samej comprising two members 5 and Bjreepectiv'ely, lthe lformerhaving''anobliquely eX; tendirig-l'iollowf`grond shearing' member T and thelatter'dhaving an ODDOsing obliquely extending' l he110W'-,g'rouncl1shearingf` member 8 integrally:

fbrned; thereon. The opposing ,rner'r'iloiersr of the said* mefber Bibeingprovid'e with apertures a, which are "clantedftoi receive Corresponding projecting:

pi bjirigimlly xedlor: nttedfinthe'membr s. SaidncuY termemb'er 5 is alsciproviledwith tapped aperturesfc, whicharel so disposed [as to register f embodying al stilllfi'rthermodification, butgpartlyj in elevation 'and showingbuta fragment ofthe lisfa planriewef the razor'construction 'SHOW ifi Fig'- 9? ,2, Fig.; 1l is yalorigituclinal', yertical section on thewv vIrie'l'nloe 6I-when 'the 'two are assembled' as shown o' permit "of'j screws 9, beingl in- |.2` VAforer'riefin; fthe shank'` le? vf the member s, serves? tof lK ete fadirigid-lysecure the shaving A'reciprbcating vcutter` 'bar-20 isslidably mount? ed `between'said rnei'nloeirs 5 'and-5'; the same being K 4adaptedto reciprocatefin the-axial'slot'22ffor1'n'eV betweenf-therespeetive' members 5 and'. AsY shown-in the construction 1 illustrated in" Fig; '5,1

saiolj cutter fjoar-jhas'y anl upwardly projecting ob"- liquelyy extendirig'v hollow-grou'nd double-edged:

blade element '23 integrally formed theremwliih blade;reclprocates.longitudinally in thel oblique Fig. v4 is aL b0120311-L pi'a'nviw' or" the' blade,

heed ere'lauapted bentted together 'in y anner shown Figs.` Zand 4, said cutterV f slot 24 formed between the shearing members 1 and 8. Said cutter bar is provided with a central, transversely-extending slot 25 which is adapted to snugly receive a cam wheel 26 that is mounted on a pin 2l, which latter is in turn eccentrically mounted on the upper end of the shaft 2.

In the construction shown in Fig. 7, the reciprocating cutter bar 3|] has a replaceable blade element which is detachably but rigidly held therein by a set screw 3|, said blade element comprising a flat thin metal shank32 on which is mounted a hollow-ground double-edged blade member 33. Said bar also has a transverse slot 34 for the reception of the cam wheel 26.

In the construction shown in Fig. 8, the cutter bar 35 is generally similar to the cutter bar 20, except that the blade element 36 thereof is of lesser height and the shearing edges o f the shearing members 3`| and 38 slightly overlap the adjacent shearing edge of the blade element when such edge is in its closest proximity thereto during the shaving operation.

In the modified construction illustrated in Figs. 9 to 14, the cutter bar 4|) reciprocates both laterally and longitudinally in a slot 4| formed between the opposing shearing members 42 and 43 of the shaving head and which slot is parallel to the longitudinal axis of the shaving head. On the bottom of said bar is provided a transverse slot 44 for the reception of the cam wheel 26 and oblique slots 45 for the reception of rollers 46 that are mounted on pins 41 rigidly anchored in the member 43'. The cutter bar in this construction constitutes a blade carrier, the same being provided with spaced vertical pins 43 which are adapted to be projected through registering apertures 49 formed in a double-edged blade element 50 and having a central aperture 5I for the reception of a screw 52 that is adapted to be threaded into said blade element. The height of the cutter b-ar 4|) is such that at the extreme limit of the lateral movements of the blade carrier and blade mounted thereon the ground faces of members 42 and 43 adjacent their shearing edge will be overlapped by the ground bottom faces of the blade adjacent the shearing edges f, j thereof. As a consequence, the blades during their reciprocation in the slot 4| are actually sharpened due to the sliding frictional engagement of their groundlower faces and the said upper ground faces of the members 42 and 43. Furthermore, such construction prevents the possibility, in the event of wear of the moving parts of the implement, that the shearing edges f, f' of the blades will forcibly strike against the shearing edges e, e of the shearing members 42 and 43 and become dulled or blunted as a result of such forcible engagement therebetween.

Preferably, as shown in Figs. 10 and 14, the shearing edges f, f of the blade, while parallel to each other, extend on the bias, i. e. at an acute angle, with respect to the shearing edges e, e of the members 42 and 43, which latter edges are parallel to each other and extend normal to the transverse axis of the shaving head. Consequently, any hairs projecting into the slot 4| will be successively sheared off during the shaving operation due to the fact that the co-operating shearing edges of the blade and of the associated shearing members being relatively oblique with respect to each other, function as true shears and. relatively cross each other progressively of their length.

In the operation of the implement of the form illustrated in Fig. l, the anti-clockwise rotation of the shaft will through the associated cam wheel and the co-operating slot 23 in the cutter bar, effect the longitudinal reciprocation of the cutter bar in a direction parallel to the longitudinal axis of the shaving head. Since the shearing edges of the shaving head members 5 and 6, though parallel to each other, extend obliquely with respect vto the longitudinal axis of the shaving head, the mouths of the slot 24 on the respective sides of the blade will be respectively, alternately opened and almost but not absolutely completely closed during the longitudinal reciprocation of the cutter bar axially in the shaving head, with the consequence that hairs entering the slot 24 first through the open mouth thereof on one side and then through the open mouth in the other side thereof will, as the said slots alternately substantially but not absolutely close, be sheared oi substantially flush with the surface of the skin of the person shaving with my improved dry shaver. As is apparent from the construction illustrated in Figs. 1 and 2, the implement is so designed that the co-operative shearing edge on one member of the shaving head and the adjacent edge of the movable blade will at no time actually forcibly impinge against each other but they are designed to so closely approach each other as to shear off all hairs entering therebetween into the slot 24. However, in the construction shown in Fig. 8, the edges of the blade are just below the level of the shearing edges of the shaving head and consequently the mouths of slot 24 on either side of the blade will be completely closed during the reciprocation of the blade.

While I prefer to employ a double-edge blade member, my invention as embracedywithin the scope of the appended claims, also contemplates the use of a single-edged blade, in which event, of course, only the adjacent edge of the groove in the shaving head would be lapped or sharpened to a shearing edge. Furthermore, while I prefer to sharpen the edges of the slot in the shaving head to a razor-like edge, this is not essential, since the reciprocating blade member will force the hairs againstthe adjacent edge `of the slot and then the shearing edge of the blade member will of itself effect the severing of the hairs so held by the edge of thev slot even though the latter is relatively dull. Various other changes in the details of construction, also Within the scope of the appended claims, may likewise be made.

In addition to the advantages hereinbefore mentioned, may b-e mentioned the fact that due to the -fact the blade member is adapted to directly contact with the face, it is possible by exerting a little extra pressure on thev razor shaving head when shaving therewith, to press the blade over substantially its entire surface against the skin and such pressure being imparted through the cam and shaft to the motor immediately slows down the motor with the result that the reciprocation of the blade member is correspondingly slowed down and the hairs have a longer period in which to enter the receiving slots. Accordingly, the user can thereby to a Certain extent regulate the motor speed as Well within reasonable limit, whereas were there an intermediate guard or plate or comb interposed between the blade and the face of the user, such action would not be possible.`

Having thus described my invention. what I claim and desire to obtain by UnitedStates Letters Patent is: ,n In a shaving implement, the combination comprising a stationaryr shaving head having a 10 thereof .v

formed in the other of said members, for e'ect- .ing reciprocation of the cutter bar obliquely with respectto vthe longitudinal axis of the rslot in the shaving head, whereby the longitudinal edges of the cutter bar during the reciprocation thereof approach and Ithen recede from the adjacent shearing edges" of vthe shaving head thus alternating forming hair-receiving slots on either side of the cutter bar' during rthe movements l JAMES D. ALTEMUS. 

